Maybe not much help, but travel to the US every year, at least once, and usually drive a few thousand miles. Never hired an RV, would never hire an RV - there are loads of really decent motels across all major routes (last year we drove from Vegas to Orlando, no bother, two years before we drove from LA down to Mexico, then back up to Canada, across the southern Canadian States to Ontario and back down to Boston). Always stayed in Motels, middle class stuff (we use which is not to everybody's taste but usually get a 4* motel/hotel for a 3* price). We research the RV scenario but by the time you pay for the rental, insurance, overnight stays and the occasions where you just want to loll in a bath - it was never worth it. So, bottom line, the interstate roads are great, it's not too expensive to hire a decent car and there's usually lots of choice of decent motels. Sorry if this puts you off your dream of an RV holiday - but there are times when you'll have to park up in an RV station and then there's miles to the nearest shopping area (I mean Walmart!) - so you've forgotten the eggs/milk/tissues - and you have to drive the RV to the shops!!!